#include <iostream>
#include <vector>
using namespace std;

vector<int> mul(vector<int> &A,int b)
{
	vector<int> C;
	for(int i = 0, t = 0; i < A.size() || t; i++)
	{
		if(i < A.size()) t += A[i] * b;
		C.push_back(t % 10);
		t /= 10;
	}
	
	while(C.size() > 1 && C.back() == 0) C.pop_back();
	
	return C;
}


int main()
{
	string a;
	int b;
	vector<int> A;
	cin >> a >> b ;
	
	for(int i = a.size() - 1;i>=0;i--) A.push_back(a[i] - '0');
	
	auto C = mul(A,b);
	
	for(int i = C.size() - 1;i >= 0;i--) printf("%d",C[i]);
	
	return 0;	
}